CN109667156B - Production method of high-physical-property imitated leather microfiber synthetic leather - Google Patents
Production method of high-physical-property imitated leather microfiber synthetic leather Download PDFInfo
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- CN109667156B CN109667156B CN201710949590.6A CN201710949590A CN109667156B CN 109667156 B CN109667156 B CN 109667156B CN 201710949590 A CN201710949590 A CN 201710949590A CN 109667156 B CN109667156 B CN 109667156B
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
- D06N3/0004—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using ultra-fine two-component fibres, e.g. island/sea, or ultra-fine one component fibres (< 1 denier)
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/564—Polyureas, polyurethanes or other polymers having ureide or urethane links; Precondensation products forming them
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
- D06N3/14—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/16—Synthetic fibres, other than mineral fibres
- D06M2101/18—Synthetic fibres consisting of macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06M2101/20—Polyalkenes, polymers or copolymers of compounds with alkenyl groups bonded to aromatic groups
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/16—Synthetic fibres, other than mineral fibres
- D06M2101/30—Synthetic polymers consisting of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M2101/34—Polyamides
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2211/00—Specially adapted uses
- D06N2211/12—Decorative or sun protection articles
- D06N2211/28—Artificial leather
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
The invention relates to the field of synthetic leather, in particular to a production method of high-physical-property imitated leather microfiber synthetic leather, which aims to solve the technical problem of insufficient softness of the traditional PU synthetic leather.
Description
Technical Field
The invention relates to the field of synthetic leather, in particular to a production method of high-physical-property imitated leather microfiber synthetic leather.
Background
The synthetic leather industry is more and more favored by investors as a new industry with a wide development prospect. With the development and progress of science and technology, high and new technologies such as ultrasonic technology, electronic technology, microwave and high-voltage technology and the like are widely applied to the field of synthetic leather. In addition, the attention of people to low carbon and environmental protection is increasingly deepened, the synthetic leather industry focuses on cleaner production, and the whole industry gradually develops towards ecological synthetic leather. With increasing market demand, the demand gap is increasing continuously, and the synthetic leather industry in China has unprecedented development opportunity.
Disclosure of Invention
The invention aims to solve the technical problem that the traditional PU synthetic leather is insufficient in softness, and provides a production method of high-physical-property imitated leather microfiber synthetic leather by taking ultrafine fiber non-woven fabric as base fabric.
In order to solve the technical problems, the production method of the high-physical-property imitated leather microfiber synthetic leather is realized by the following steps:
1) preparation of impregnated material
Mixing 100 parts of polyurethane, 250 parts of dimethylformamide, 18 parts of toluene-resistant color paste, 1 part of impregnation aid, 2 parts of tear-resistant aid and 0.8 part of hydrolysis-resistant aid according to the weight components, stirring at the normal temperature at the stirring speed of 1250r/min for 15 minutes until the polyurethane, the dimethylformamide and the toluene-resistant color paste are completely dissolved, and controlling the solution viscosity at 100 cps;
2) preparation of the Fabric
Mixing 100 parts of polyurethane, 36 parts of dimethylformamide, 2 parts of nonionic surfactant, 3 parts of color paste and 1.4 parts of hydrolysis-resistant additive according to weight components, stirring at the normal temperature at the stirring speed of 1300r/min for 35 minutes until the polyurethane, the dimethylformamide and the color paste are completely dissolved, stirring until the slurry is uniform, reducing the stirring speed to 550r/min, and carrying out vacuum defoaming for 90 minutes, wherein the viscosity of the solution is controlled at 15000 cps;
3) taking superfine fiber non-woven fabric as base fabric, and applying a wet high-density one-step method to synchronously carry out impregnation and coating, wherein the coating gaps are 270 strips; then the mixture is put into a coagulating tank with the content of dimethylformamide of 15-16 percent for coagulation; after solidification, the obtained product enters a washing tank for washing, and after washing, the obtained product is directly rolled for the next process (the edges of the PU layer which are not coated with Bass are trimmed off during rolling) without being dried;
4) feeding the semi-finished product obtained in the step 3) into a decrement tank, filling a toluene solution in the decrement tank, dissolving the sea component under the action of the toluene solution, and extracting and dissolving the PET in the superfine fiber non-woven fabric after multi-tank dissolution; then, cleaning with boiling water to realize the opening of the superfine fiber and prepare an opening semi-finished product;
5) oiling the split semi-finished product obtained in the step 4), wherein the solution proportion of an oiling agent is 8%, so that the softness of the bass is improved, then stretching, enabling the width of the bass to reach 1.40 m, drying and rolling;
6) grinding the oiled semi-finished product obtained in the step 5) by using 400-mesh abrasive paper, wherein the grinding loss is controlled within 0.02mm, so that the problem that the surface processing is influenced by the smoothness of a wet layer of the bass surface layer after oiling is solved;
7) and after grinding, the leather is ground by a post-treatment long-line graining machine to make the bass softer and more natural, so that the high-physical-property imitated leather microfiber synthetic leather with a double-layer structure and a leather effect is formed.
The invention has the following positive effects:
according to the high-physical-property imitated leather microfiber synthetic leather, a PU wet method and a microfiber non-woven fabric are wound together through an impregnation coating method, and then reduction and after-finishing processes are carried out, so that the high-physical-property imitated leather microfiber synthetic leather with a double-layer structure and an ultra-soft microfiber synthetic leather is finally formed. The physical property index of the high-physical-property imitated dermal microfiber synthetic leather is higher than that of a second layer leather, the price of the high-physical-property imitated dermal microfiber synthetic leather is far lower than that of the second layer leather and genuine leather, the cost performance is high, and the high-physical-property imitated dermal microfiber synthetic leather can be directly utilized at a sports product end. The continuously improved environmental protection requirements at home and abroad and the increasingly enhanced health and safety requirements of consumers, and the high-physical-property leather-imitated ecological synthetic leather is more and more favored.
The selected base cloth is superfine fiber non-woven cloth, is a non-woven cloth, directly utilizes high polymer slices, short fibers or filaments to form a novel fiber product with soft, air-permeable and planar structures through various fiber web forming methods and consolidation techniques, has the characteristics of high yield, low cost, fast variety change, wide raw material sources and the like, has the characteristics of over-hard hand feeling, poor permeability, insufficient spinning fineness and poor strength compared with the traditional PU synthetic leather non-woven cloth, and has the characteristics of good softness, good air permeability, strong toughness, easy processing, easy washing, easy sewing, sanitation, sterility and the like.
Detailed Description
As a specific embodiment, when manufacturing the high-physical-property imitated leather microfiber synthetic leather, the microfiber non-woven fabric is selected as the base fabric, and the thickness is selected to be 1.5mm and the gram weight is 450g/m by considering the physical property, the hand feeling and the cost2The ultrafine fiber nonwoven fabric of (1). When the superfine fiber non-woven fabric is produced, the PA6 slices are dried and then mixed with LDPE according to the mass ratio of 45: 55, or the PA6 slices are dried and then mixed with polystyrene according to the mass ratio of 60: 40, and then the polyamide fiber blended sea-island fiber is prepared by a spinning process; preparing superfine fiber non-woven fabric from the chinlon blended sea-island fiber by a needle punching process; the superfine fiber non-woven fabric is subjected to a heat setting process to realize the thickness of 1.5mm and the gram weight of 450g/m2And (4) shaping, namely finishing the production and the manufacture of the base cloth.
The polyurethane in the dipping material is selected to have good hydrolysis resistance, and the 100 percent modulus is 45-55Kg/cm2The paint has good compatibility with dimethylformamide and toluene-resistant color paste, good color development to the toluene-resistant color paste, stable solidification speed, no mottling and fine back wrinkles.
The nonionic surfactant is used for improving the back effect of the impregnated microfiber non-woven fabric, accelerating the exchange speed of dimethylformamide and reducing the exchange concentration difference of the dimethylformamide.
The polyurethane in the fabric has the advantages of excellent hydrolysis resistance, good rebound resilience, strong meat feeling, high peel strength (more than 120N/3cm), high solidification speed, suitability for a high-concentration solidification process, uniform and stable foam holes, polyether-containing property and 100% modulus of 45-55Kg/cm2。
Impregnation auxiliary agent: improve the physical index of the sewed microfiber non-woven fabric and improve the solidification process.
Tear resistance aid: the tearing strength of the warp direction and the weft direction of the microfiber non-woven fabric is improved.
Hydrolysis resistance auxiliary agent: reduce the surface tension of non-woven fabrics and resin, increase the wetting angle of water, slow down the hydrolysis of amido bond and lipid group.
The production method of the high-physical-property imitated leather microfiber synthetic leather is realized by the following steps:
1) preparation of impregnated material
Mixing 100 parts of polyurethane, 250 parts of dimethylformamide, 18 parts of toluene-resistant color paste, 1 part of impregnation aid, 2 parts of tear-resistant aid and 0.8 part of hydrolysis-resistant aid according to the weight components, stirring at the normal temperature at the stirring speed of 1250r/min for 15 minutes until the polyurethane, the dimethylformamide and the toluene-resistant color paste are completely dissolved, and controlling the solution viscosity at 100 cps;
2) preparation of the Fabric
Mixing 100 parts of polyurethane, 36 parts of dimethylformamide, 2 parts of nonionic surfactant, 3 parts of color paste and 1.4 parts of hydrolysis-resistant additive according to weight components, stirring at the normal temperature at the stirring speed of 1300r/min for 35 minutes until the polyurethane, the dimethylformamide and the color paste are completely dissolved, stirring until the slurry is uniform, reducing the stirring speed to 550r/min, and carrying out vacuum defoaming for 90 minutes, wherein the viscosity of the solution is controlled at 15000 cps;
3) taking superfine fiber non-woven fabric as base fabric, and applying a wet high-density one-step method to synchronously carry out impregnation and coating, wherein the coating gaps are 270 strips; then the mixture enters a coagulating tank containing 15 percent of dimethylformamide for coagulation; after solidification, the obtained product enters a washing tank for washing, and after washing, the obtained product is directly rolled for the next process (the edges of the PU layer which are not coated with Bass are trimmed off during rolling) without being dried;
4) feeding the semi-finished product obtained in the step 3) into a decrement tank, filling a toluene solution in the decrement tank, dissolving the sea component under the action of the toluene solution, and extracting and dissolving the PET in the superfine fiber non-woven fabric after multi-tank dissolution; then, cleaning with boiling water to realize the opening of the superfine fiber and prepare an opening semi-finished product; because the PU layer is arranged on the superfine fiber non-woven fabric, in the weight reduction process, PET is drawn out, so that the Bess has a tendency of shrinking towards the direction without the PU layer, if the front face is downward (positive), the Bess is easy to shrink, and the Bess can be crushed by the crimping roller, so that if the crimping roller is used, the crimping roller is timely lifted to prevent the Bess from being crushed. Tests show that the back of the bass without the PU layer is trimmed and enters the reducing groove with the right side facing upwards (reversely placed), so that the curling can be effectively avoided.
5) Oiling the split semi-finished product obtained in the step 4), wherein the solution proportion of an oiling agent is 8%, so that the softness of the bass is improved, then stretching, enabling the width of the bass to reach 1.40 m, drying and rolling;
6) grinding the oiled semi-finished product obtained in the step 5) by using 400-mesh abrasive paper, wherein the grinding loss is controlled within 0.02mm, so that the problem that the surface processing is influenced by the smoothness of a wet layer of the bass surface layer after oiling is solved;
7) and after grinding, the leather is ground by a post-treatment long-line graining machine to make the bass softer and more natural, so that the high-physical-property imitated leather microfiber synthetic leather with a double-layer structure and a leather effect is formed.
The high-physical-property imitated leather microfiber synthetic leather prepared according to the steps has the following physical property indexes through actual measurement:
Claims (4)
1. a production method of high-physical-property imitated leather microfiber synthetic leather is characterized by comprising the following steps of: the method comprises the following steps:
1) preparation of impregnated material
Mixing 100 parts of polyurethane, 250 parts of dimethylformamide, 18 parts of toluene-resistant color paste, 1 part of impregnation aid, 2 parts of tear-resistant aid and 0.8 part of hydrolysis-resistant aid according to the weight components, stirring at the normal temperature at the stirring speed of 1250r/min for 15 minutes until the polyurethane, the dimethylformamide and the toluene-resistant color paste are completely dissolved, and controlling the solution viscosity at 100 cps;
2) preparation of the Fabric
Mixing 100 parts of polyurethane, 36 parts of dimethylformamide, 2 parts of nonionic surfactant, 3 parts of color paste and 1.4 parts of hydrolysis-resistant additive according to weight components, stirring at the normal temperature at the stirring speed of 1300r/min for 35 minutes until the polyurethane, the dimethylformamide and the color paste are completely dissolved, stirring until the slurry is uniform, reducing the stirring speed to 550r/min, and carrying out vacuum defoaming for 90 minutes, wherein the viscosity of the solution is controlled at 15000 cps;
3) taking superfine fiber non-woven fabric as base fabric, and applying a wet high-density one-step method to synchronously carry out impregnation and coating, wherein the coating gaps are 270 strips; then the mixture is put into a coagulating tank with the content of dimethylformamide of 15-16 percent for coagulation; after solidification, the mixture enters a washing tank for washing, and after washing, the mixture is directly rolled for the next process without drying;
4) sending the semi-finished product obtained in the step 3 into a decrement tank, filling a toluene solution in the decrement tank, dissolving the sea component under the action of the toluene solution, and extracting and dissolving the PET in the superfine fiber non-woven fabric after multi-tank dissolution; then, cleaning with boiling water to realize the opening of the superfine fiber and prepare an opening semi-finished product;
5) oiling the split semi-finished product obtained in the step 4, wherein the solution proportion of an oiling agent is 8%, so that the softness of the bass is improved, then stretching, enabling the width of the bass to reach 1.40 m, drying and rolling;
6) grinding the oiled semi-finished product obtained in the step 5 by using 400-mesh abrasive paper, wherein the grinding loss is controlled within 0.02mm, so that the problem that the surface processing is influenced by the smoothness of a wet layer of the bass surface layer after oiling is solved;
7) and after grinding, the leather is ground by a post-treatment long-line graining machine to make the bass softer and more natural, so that the high-physical-property imitated leather microfiber synthetic leather with a double-layer structure and a leather effect is formed.
2. The method of claim 1, wherein: the thickness of the superfine fiber non-woven fabric is 1.5mm, and the gram weight is 450g/m2。
3. The method of claim 1, wherein: the 100% modulus of the polyurethane in the impregnating material is 45-55Kg/cm2。
4. The method of claim 1, wherein: the 100% modulus of polyurethane in the fabric is 45-55Kg/cm2The peel strength is more than 120N/3 cm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710949590.6A CN109667156B (en) | 2017-10-13 | 2017-10-13 | Production method of high-physical-property imitated leather microfiber synthetic leather |
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| CN201710949590.6A CN109667156B (en) | 2017-10-13 | 2017-10-13 | Production method of high-physical-property imitated leather microfiber synthetic leather |
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| CN109667156A CN109667156A (en) | 2019-04-23 |
| CN109667156B true CN109667156B (en) | 2021-07-02 |
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| CN111235901A (en) * | 2020-04-10 | 2020-06-05 | 安安(中国)有限公司 | Processing method of super-simulation leather mildew-proof antibacterial superfine fiber synthetic leather |
| CN112900086B (en) * | 2021-01-19 | 2023-02-28 | 科一(福建)超纤有限责任公司 | Preparation method of zero DMF (dimethyl formamide) environment-friendly microfiber bass |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010086566A (en) * | 2000-03-03 | 2001-09-13 | 구광시 | Preparation of base fabric for smooth artificial leather |
| CN101260619A (en) * | 2007-12-20 | 2008-09-10 | 福建省南平金月合成革有限公司 | Method for processing island ultra-thin fiber high-density needling non-woven fabrics emulation leather |
| CN102234937A (en) * | 2010-05-07 | 2011-11-09 | 福建兰峰制革有限公司 | Production process of top layer leather-simulated super-fibre synthetic leather |
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- 2017-10-13 CN CN201710949590.6A patent/CN109667156B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010086566A (en) * | 2000-03-03 | 2001-09-13 | 구광시 | Preparation of base fabric for smooth artificial leather |
| CN101260619A (en) * | 2007-12-20 | 2008-09-10 | 福建省南平金月合成革有限公司 | Method for processing island ultra-thin fiber high-density needling non-woven fabrics emulation leather |
| CN102234937A (en) * | 2010-05-07 | 2011-11-09 | 福建兰峰制革有限公司 | Production process of top layer leather-simulated super-fibre synthetic leather |
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